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M. J. B. BARBAROU.

MEANS FOR LUBRICATING EXPLOSIVE ENGINES.

APPLICATION FILED APR-28, I9I5.

1,322 174. I Patented Nov 18, 1919.

FIG}- M. J. B. BARBAROU.

MEANS FOR LUBRICATING EXPLOSIVE ENGINES.

APPLICATION FILED APR. 28, 19x5.

1,322, 174:. Patented Nov. 18, 1919.

2 SHEETSSHEET 2.

MARIUs JEAN BAPTISTE BARBAROU; OFNEUILLY-SUR-SEINE, FRANCE.

Specification of Letters Patent.

' MEANS r03 temmmme evasive-Enema.

Patented Nov. 18, 1919.

Applicationifiled'April as, 1915. Serial noflz'aels.

' To'aZZ whom it may concern Be it known that I,'MAn1UsTE.-\N Bar-'rrs'rn BARBAROU, a citizen of the French Republic, residing atNeuilly-sur-Seine, France, have invented certaln new and usefulImprovements in Means for Lubricating Explosive-Engines, of which thefollowing is a specification.

My invention relates to improvements in means for lubricating explosiveengines.

In lubricating systems at present" most generally employed, thecirculation of oil is effected by valveless, oscillating barrel pumps,which are generally fixed tothe lower part of the engine casing formingthe oil well or tank.

According to my invention, I support the pump at the upper part of thecasing, whereby I secure a number of very substantial advantages overexisting types 'of'hibrieating systems. By my improved arrangement, Ireduce the distance between the axis of the shaft driving the pump andthat of the barrel, thus increasing for any given stroke of theeccentric the angle of oscillation of the barrel and consequently theeX- tent to which the intake and discharge ports are opened. As a resultof increasing the opening of these ports, they may be reduced in lengthwhereby the dead space within the pump may be decreased. These twofactors, viz: increase of the opening of the ports and reduction of thedead space in the pump, cooperate in enhancing the satisfactoryoperation of the pump.

Another advantage resulting from my improved arrangement is that, owingto the fact that all parts of the pump are rigid with the upper easing,the pump may be very easily installed and inspected or repaired bysimply removing the lower part of the casing, which, in my constructionmerely performs the function of a housing forming the oil reservoir.

Another feature of my invention is that the oscillating barrel moves inan absolutely closed receptacle containing the oil which forms a seal atthe closing lips of the barrel, in this manner the entrance of airbetween the oscillating barrel and the wall of the chamber in which itrevolves is prevented.

The invention is illustratively exemplified in the accompanyingdrawings, wherein- Figure 1 is a vertical sectional view taken axiallythrough the oscillating barrel; and

Fig. 2 is a sectionat right angles to Fig. 1. Referring to the drawingsby reference characters, (6 denotes a tubular member forming the pumpbody, threaded into an oscillating barrel Z). The latter rotates in acasing cl provided with an interior sleeve or lining 0, and having oneof its endsclosed by'a'cap or head at. he casing d is suspended from theupper part f (which may be one of the engine bearings) of the enginecasing, the cap 9 of the engine bearing and a distance piece it beinginterposed between the casing 65 of the pump and the said part f of theengine'casing. 2' denotes the'intake tube which dips into the oilcontained in the I lower part j of the engine casing, and 7e flargm ofthe operating eccentric, the" disk it "of whlch 'isintegral wlthtlie'crank shaft 0 of the engine.

The oscillating barrel 5 comprises the central tubular part in which thepump body a is threaded, and the cylindrical upper and lower lips 79 andg, which slide in contact with the sleeve or lining a. To prevent theentrance of air between the lower lips q and the sleeve 0 the oil isconstantly maintained at a certain level above the plane of contact ofthese two members. To this end, the chamber 1 which surrounds thecentral tubular part b of the barrel is closed at two ends by the wallof the casing (Z andthe cap or head at, and the oil which enters thischamber at the beginning of the engine operation remains to form aliquid seal against the entrance of air. Furthermore, the contact of theupper lips p of the barrel with the sleeve 0 also prevents the entranceof air into the pump chamber;

The operation of the pump is similar tothat of the general type ofbarrel pumps, and will be understood from the following description. Asthe engine shaft 0 turns in former into communication with the dischargepipe k. This sequence occurs throughout the operation of the pump.

I desire it to be understood that the in- 5 vention is not limited tothe details of engines, in combination, an engine casing comprising anupper part and a removable lower part constituting an oil reservoir, acrank shaft rotatably supported in the upper part of said engine casing,a lubricating pump suspended from said upper part and entirely free fromthelower part, drivmg means connecting said pump to the crank shaft ofthe englne'and an extended intake tube depending from said pump into 30sald 011 tank.

2. In a lubricating device for explosive engines, in combination, anengine casing comprising an upper part and a removable lower part, thelatter being adaptedto form an oil tank, a crank shaft rotatablysupported in the upper part of the engine easing, a pump casingsuspended from said upper part and provided with an intake port incommunication with the oil tank and a discharge port in communicationwith the parts to be lubricated, an oscillating barrel mounted in saidpump casing and having a bore adapted to alternately regis ter with theintake port and the discharge port, a piston adapted to slide in saidbore of the oscillatingbarrel and an eccentric mounted on the crankshaft for driving said piston.

3. In a lubricating device for explosive engines, in combination: anengine casing comprising an upper part and a removable lower partythelatter being adapted to form an oil tank, a removable bearing capsecured to the upper part, a crank shaft rotatably supported in saidbearing cap, a pump casing suspended from said removable bearing cap,and provided with an intake port in comnnmication with the oil tank anda discharge port in communication with the parts to be lubricated, anoscillating barrel mounted in said pump casing and having a bore adaptedto alternately register with the intake port and the discharge port, apiston adapted to slide in said bore of the oscillating barrel and aneccentric mounted on the crank shaft for drivingi said piston.

In testimony whereof I have affixed my signature in presence of twowitnesses.

MARIUS JEAN BAP'llS'lE- BARBAROU.

Witnesses:

P. LAYRAR, JOHN J. ERNSTER.

